System Operacyhny OS - Assembler

Description

This book covers the RIAD mainframe systems (Unified System of Electronic Computers – JSEMC / RIAD), which were reverse-engineered clones of the American IBM System/360 and System/370 architectures. The key details on the cover that confirm this include: • Operating System OS (OS/JS): The title "System Operacyjny OS" refers to the OS/360 operating system ported to the Eastern Bloc mainframes, officially localized as OS/JS (Operacionnaja Sistema Jedinoi Systemy). • Computers (Hardware): The assembly language described here was used to program the RIAD series mainframes. This includes the R-32 (manufactured in Poland by Elwro), as well as other models imported across the Comecon block like the R-20, R-22, R-40, and R-50. • Processor / Architecture: It targets the 32-bit CISC mainframe architecture copied from IBM. It features 16 general-purpose registers, 4 floating-point registers, and a specific byte-addressable instruction set standard for enterprise computing of that era. The manual was published by ZETO Łódź (Zakład Elektronicznej Techniki Obliczeniowej) as official training material for engineers and programmers working on these room-sized computers in Poland during the 1970s and 1980s.